Refrigerating apparatus



Nov 3, WM H. F. LEHMAN REFRIGERATING APPARATUS 1930 2 Sheets-Sheet 2 W wmm// NM Filed July 31,

xxxxx T WW INVENTOR IZWMMFLMMAM 7. HIS

Patented Nov. a. 19 31 o s'ra'ras than smear HERMAN F. LEEMAN, 0FDAYTGN, OHIO, ASEJGR'OE T!) FRIGIDAIEE CORPQEATION, OF

DAETON, OHIO, A CORPORATION 01? REFEIGEBATIHG APPAMEU {21 Applicationfiled July 31,

This invention relates to refrigerating apparatus and more particularlyto cabinets cm loying such apparatus.

*loor space in stores equipped with refrigerated storage cabinets isvery valuable and sin'ce these stores are now dispensing varione foodproducts, some of which are required to be maintained at difierenttemperatures than others, it is one of the objects of this invention toprovide an improved cabinet, having compartments therein maintained atdiflerent temperatures, and to con struct the cabinet so that it willoccupy no more floor space-than cabinets heretofore used for the storageof products all of which were maintained at the same temperature.

Another object of the present invention is to provide an improvedrefrigerator cabinet, having at least two 'compartments formed therein,and to arrange in the cabinet a single evaporator extending into bothcompartments which will maintain each of the compartments at diiierenttemperatures.

Further objects and advantages ofthe present invention will be apparentfrom the following description, reference being had to the accompan ingdrawings, wherein a preferred form 0 embodiment of the present inventionis clearly shown.

In the drawings:

Fig. 1 is a perspective view of a refrigerated ice cream storage cabinetconstructed accordin to the present invention;

Fig. 2 is an enlarged top sectional view of my im roved cabinet takenalong the lines lid ' cabinet generally designated at 10."

IBBGQ Serial l lo, 471,956.

of cabinet 10 and connects with walls 17 and 18. These walls 17, 18, and19 provide a partition between the compartments 11 and 12 and ma beinsulated. One or more cylindrical receptacles 21may vbe disposed incompartment 11 and adapted to receive storage cans of bulk ice cream.One or more receptacles 22 may be disposed in compartment 12 forreceiving and storing ice cream in the form of bricks. Sealing meanssuch ,as lids 23, which rest on the top of cabinet 10, may be employedto close the openings in the top of cabinet 10 which openings permitaccess to the interior of the various receptacles 21 and 22.

The insulation 16 which surrounds the tanks 13 and 14 may comprise slabsof cork cemented to the tanks by means of an asphaltic cement. Thecabinet top generally desig nated as 26 may be bolted to the lowerportion of the cabinet and may comprise insulating material embedded inwood members.- A suitable outside metallic panel 27 may be placed aroundinsulation 16 and an upper metallic cover 28 may be placed over theinsulated top 26 of the cabinet. It is to be understood that the tanks,insulation, and outer metallic coverings of the cabinet are sup portedin any suitable manner by a metal frame 29 of suiiicient strength.

One side wall of tank 14 is provided with an opening 31 having a heavymetal ring 32 around the edge thereof and welded to the interior of thetank 14. This ring is adapted to receive bolts 33 which pass through aflange 34 provided on the front of the evaporator 35. The evaporator 35includes an elongated container 36 which is disposed in compartment 12and extends into compartment 11 through an opening 37 provided in theconnecting wall 19 which forms a part of the partition betweencompartmentsll and-12. A sleeve 38 secured to the wall of tank: 12 maybe employed to support the end of evaporator 35.

ant inlet and outlet connections 41 and 42 for connecting the evaporatorto any suitable refrigerant circulating device (not shown). Therefrigerant inlet and outlet connections 41 and 42 of the evaporator arelocated in a space provided by the wood frame 43 in the insulated wallof cabinet 10 and are adapted to be covered by a suitable insulationwhich is in turn covered by a small removable metal plate 44 whichcovers the opening 45 provided in the panel 27 of cabinet. I provide aplurality of fins 46 on that portion of container 36 which is disposedin the compartment 12 in order to increase the cooling surface of thatportion of the evaporator so as to obtain a lower temperature incompartment 12 than is maintained in compartment .11.

In Fig. 4 I have shown a modified form of my invention wherein the tank47 of the cabinet 10 is of one piece and a partition 48 is removablysecured to the tank by U-shaped brackets 49 so as to divide the tankinto compartments 11a and 12a. It is apparent from net.

the disclosure iii Fig. 4 that I have provided an ice cream cabinetwhich may ormay not be utilized as a two temperature cabinet. Should itbe desirable to maintain the same temperature throughout the entirecabinet the partition 48 may be removed from the cabi- In order toremove the partition 48, evaporator 35 and the insulated top 26 ofcabinet 10 is removed thus permiting the partition 48 to be raisedupwardly and removed from the cabinet. After evaporator 35 has beenagain placed in the cabinet and the insulated top 26 has been placed onthe cabinet it is obvious that substantially the same temperature willbe maintained throughout the cabinet.

It is apparent from the foregoing description that I have provided anovel refrigerator cabinet employing a single evaporator of arefrigerating system to produce two temperatures in the cabinet forstoring various food roducts such as two varieties of ice cream.

has my improved cabinet permits ice cream in the form of bricks to bestored in one compartment thereof and maintained in a solid state whileat the same time permitting bulk ice cream to be stored and maintainedinanother compartment of the cabinet at a substantially highertemperature in order to permit the bulk ice cream to be readilydispensed. Furthermore it is apparent that my improved arrangementprovides a cabinet which will occupy no more valuable floor space thanrefrigerator cabinets heretofore employed in which one temperature onlywas maintained.

While the form of embodiment of the present invention as hereindisclosed, constitutes a preferred form, it is to be understood thatother forms might be adopted, all coming within the scope of the claimswhich follow.

What is claimed is as follows:

1. A refrigerating apparatus comprising in combination, a cabinet, anevaporator within said cabinet, said evaporator having means cooperatingtherewith for maintaining a substantially constant level of liquidrefrigerant therein, a partition dividing said cabinet into a pluralityof compartments, said partition including portions extending parallelwith the end walls of said cabinet and a connecting portion extendingparallel with the side walls of said cabinet, said evaporator extendingthrough the connecting portion of said partition so as to be disposed inboth of said compartments and arranged to cause the cooling effectproduced thereby within one of said compartments to be greater than inthe other of said compartments.

2. A refrigerating apparatus comprising in combination, a cabinet, anevaporator within said cabinet, said evaporator having means cooperatingtherewith for maintaining a sub stantially constant level of liquidrefrigerant therein, a partition dividing said cabinet into a pluralityof compartments, said partition including portions extending parallelwith the end walls of said cabinet and a connecting portion extendingparallel with the side walls of said cabinet,- said evaporator extendingthrough the connecting portion of said partition so as to be disposed inboth of said compartments, means cooperating with a portion of saidevaporator for causing the cooling efi'ect produced by said evaporatorwithin one of said compartments to be greater than in the other of saidcompartments.

3. A refrigerating apparatus comprising in combination, a cabinet, anevaporator within said cabinet, said evaporator having means cooperatingtherewith for maintaining a substantially constant level of liquidrefrigerant therein, a partition dividing said cabinet into a pluralityof compartments, said partition including portions extending parallelwith the end walls of said cabinet and a connecting portion extendingparallel with the side walls of said cabinet, said evaporator extendingthrough the connecting portion of said partition so as to be disposed inboth of said compartments, fins on a portion of said evaporator forcausing the cooling effect produced by said evaporator within one ofsaid compartments to be greater than in the other of said compartments.

4. A refrigerating apparatus comprising in combination, a cabinet, apartition dividing said cabinet into a plurality of compartments, saidcompartments being substantially filled with a non-congealable liquid,an

evaporator disposed in said non-congealable liquid and having a floatvalve mechanism therein for maintaining a substantially constant levelof liquid refrigerant therein, said evaporator extending into both ofsaid compartments, fins on a portion of said evaporator for causing thecooling effect produced by said evaporator within one of saidcompartments to begreater than in the other of said compartments.

5. A refrigerating apparatus comprising in combination, a cabinet, apartition dividing said cabinet into a plurality of compartments, saidpartition including portions extending parallel with the end walls ofsaid cabinet and a connecting portion extending parallel with the sidewalls of said cabinet, said compartments being substantially filled witha noncongealable liquid, an evaporator disposed in said non-congealableliquid and having a float valve mechanism therein for maintaining asubstantially constant level of liquid refrigerant therein, saidevaporator extending through the connecting portion of said partition soas to be disposed in both of said compartments and arranged to cause thecooling efi'ect produced thereby in one of said compartments to begreater than in the other of said compartments.

6. A refrigerating apparatus comprising in combination, a cabinet, apartition dividing said cabinet into a plurality of compartments, saidpartition including portions extending parallel with the end walls ofsaid cabinet and a connecting portion extending parallel with the sidewalls of said cabinet, said compartments being substantially filled witha noncongealable liquid, an evaporator disposed in said non-congealableliquid and having a float valve mechanism therein for maintaining asubstantially constant level of liquid refrigerant therein, saidevaporator extending through the connecting portion of said partition soasto be disposed in both of said compartments, means cooperating with aportion of said evaporator for causing the cooling efi'ect produced bysaid evaporator within one of said compartments to be greaterthan in theother of said compartments.

7. A refrigerating apparatus comprising in combination, a cabinet, apartition dividing said cabinet into a plurality of compartments, saidpartition including portions extending parallel with the end walls'ofsaid cabinet and a connecting portion extending parallel with the sideWalls of said cabinet, said compartments being substantially filled witha non-congealable liquid, an evaporator disposed in said non-congealableliquid and having a float valve mechanism therein for maintaining asubstantially constant level of liquid refrigerant therein, saidevaporator extending through the connecting portion of said partition soas to be disposed in both signature.

HERMAN F. LEHMAN.

